What is nssm.exe?

nssm.exe is part of NSSM 64-bit according to the nssm.exe version information.

nssm.exe's description is "The non-sucking service manager"

nssm.exe is digitally signed by Express Vpn LLC.

nssm.exe is usually located in the 'C:\Program Files (x86)\ExpressVPN\bootstrap\amd64\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about nssm.exe.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

The following is the available information on nssm.exe:

PropertyValue
Product nameNSSM 64-bit
File descriptionThe non-sucking service manager
Commentshttp://nssm.cc/
Legal copyrightPublic Domain; Author Iain Patterson 2003-2014
Product version2.24
File version2.24

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameNSSM 64-bit
File descriptionThe non-sucking service manager
Commentshttp://nssm.cc/
Legal copyrightPublic Domain; Author Iain Patterson..
Product version2.24
File version2.24

Digital signatures [?]

nssm.exe has a valid digital signature.

PropertyValue
Signer nameExpress Vpn LLC
Certificate issuer nameCOMODO RSA Code Signing CA
Certificate serial number00e307f6f1fac7423e6c00336a94105b17

VirusTotal report

None of the 71 anti-virus programs at VirusTotal detected the nssm.exe file.

None of the 71 anti-virus programs detected the nssm.exe file.

Sandbox Report

The following information was gathered by executing the file inside Cuckoo Sandbox.

Summary

Successfully executed process in sandbox.

Summary

{
    "regkey_written": [
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\services\\eventlog\\Application\\NSSM\\TypesSupported",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\services\\eventlog\\Application\\NSSM\\EventMessageFile"
    ],
    "dll_loaded": [
        "dwmapi.dll",
        "C:\\Windows\\system32\\MSCTF.dll",
        "ADVAPI32.dll",
        "kernel32.dll",
        "OLEAUT32.DLL",
        "C:\\Windows\\system32\\ole32.dll",
        "advapi32.dll",
        "C:\\Windows\\system32\\uxtheme.dll"
    ],
    "file_opened": [
        "C:\\Windows\\Globalization\\Sorting\\sortdefault.nls",
        "C:\\Windows\\Fonts\\staticcache.dat"
    ],
    "regkey_opened": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\FontLink\\SystemLink",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Segoe UI",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\DataStore_V1.0",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\NSSM"
    ],
    "file_read": [
        "C:\\Windows\\Fonts\\staticcache.dat"
    ],
    "regkey_read": [
        "HKEY_CURRENT_USER\\Keyboard Layout\\Toggle\\Language Hotkey",
        "HKEY_CURRENT_USER\\Keyboard Layout\\Toggle\\Hotkey",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorUseSystemHeap",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\CTF\\TIP\\{0000897b-83df-4b96-be07-0fb58b01c4a4}\\LanguageProfile\\0x00000000\\{0001bea3-ed56-483d-a2e2-aeae25577436}\\Enable",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\Windows Error Reporting\\WMR\\Disable",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\DataStore_V1.0\\DataFilePath",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\DataStore_V1.0\\Disable",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Locale\\00000409",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorSystemHeapIsPrivate",
        "HKEY_CURRENT_USER\\Keyboard Layout\\Toggle\\Layout Hotkey",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane8",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane9",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane6",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane7",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane4",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane5",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane2",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane3",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane1",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language Groups\\1",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\CTF\\EnableAnchorContext",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane10",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane11",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane12",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane13",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane14",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane15",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane16"
    ]
}

Generic

[
    {
        "process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\020fcc5c915f854e55ea56ef467cbcdab86156198a10de7a1149675dd9b835f1.bin",
        "process_name": "020fcc5c915f854e55ea56ef467cbcdab86156198a10de7a1149675dd9b835f1.bin",
        "pid": 2124,
        "summary": {
            "regkey_written": [
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\services\\eventlog\\Application\\NSSM\\TypesSupported",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\services\\eventlog\\Application\\NSSM\\EventMessageFile"
            ],
            "dll_loaded": [
                "dwmapi.dll",
                "C:\\Windows\\system32\\MSCTF.dll",
                "ADVAPI32.dll",
                "kernel32.dll",
                "OLEAUT32.DLL",
                "C:\\Windows\\system32\\ole32.dll",
                "advapi32.dll",
                "C:\\Windows\\system32\\uxtheme.dll"
            ],
            "file_opened": [
                "C:\\Windows\\Globalization\\Sorting\\sortdefault.nls",
                "C:\\Windows\\Fonts\\staticcache.dat"
            ],
            "regkey_opened": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\FontLink\\SystemLink",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Segoe UI",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\DataStore_V1.0",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\NSSM"
            ],
            "file_read": [
                "C:\\Windows\\Fonts\\staticcache.dat"
            ],
            "regkey_read": [
                "HKEY_CURRENT_USER\\Keyboard Layout\\Toggle\\Language Hotkey",
                "HKEY_CURRENT_USER\\Keyboard Layout\\Toggle\\Hotkey",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorUseSystemHeap",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\CTF\\TIP\\{0000897b-83df-4b96-be07-0fb58b01c4a4}\\LanguageProfile\\0x00000000\\{0001bea3-ed56-483d-a2e2-aeae25577436}\\Enable",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\Windows Error Reporting\\WMR\\Disable",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\DataStore_V1.0\\DataFilePath",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\DataStore_V1.0\\Disable",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Locale\\00000409",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorSystemHeapIsPrivate",
                "HKEY_CURRENT_USER\\Keyboard Layout\\Toggle\\Layout Hotkey",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane8",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane9",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane6",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane7",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane4",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane5",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane2",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane3",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane1",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language Groups\\1",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\CTF\\EnableAnchorContext",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane10",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane11",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane12",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane13",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane14",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane15",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack\\SurrogateFallback\\Plane16"
            ]
        },
        "first_seen": 1568447586.625,
        "ppid": 1624
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1568447586.3594,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "Checks if process is being debugged by a debugger",
        "severity": 1,
        "marks": [
            {
                "call": {
                    "category": "system",
                    "status": 0,
                    "stacktrace": [],
                    "last_error": 0,
                    "nt_status": -1073741772,
                    "api": "IsDebuggerPresent",
                    "return_value": 0,
                    "arguments": {},
                    "time": 1568447157.2843,
                    "tid": 2800,
                    "flags": {}
                },
                "pid": 2124,
                "type": "call",
                "cid": 155
            }
        ],
        "references": [],
        "name": "checks_debugger"
    }
]

Yara

The Yara rules did not detect anything in the file.

Network

{
    "tls": [],
    "udp": [
        {
            "src": "192.168.56.101",
            "dst": "192.168.56.255",
            "offset": 662,
            "time": 6.2198078632355,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5190,
            "time": 6.1802759170532,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5518,
            "time": 4.1553318500519,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5846,
            "time": 6.1926598548889,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6174,
            "time": 4.6619927883148,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6502,
            "time": 3.0507128238678,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6830,
            "time": 4.6726138591766,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 15512,
            "time": 4.1861689090729,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 19704,
            "time": 6.2663958072662,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "080ff41464acc90b852cf56344a813b0fd6eb6365a70b7244310303362c6df23",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "be35cbb73325efefd9491cf9f202fc283deee1fe2ee79033320eb78206126687",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandboxScreenshot from the sandbox

Other files also named nssm.exe

nssm.exe (20 votes)

Hashes [?]

PropertyValue
MD5738f00aa0d0371af6b2cc8917bd03e49
SHA256020fcc5c915f854e55ea56ef467cbcdab86156198a10de7a1149675dd9b835f1

Error Messages

These are some of the error messages that can appear related to nssm.exe:

nssm.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

nssm.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

The non-sucking service manager has stopped working.

End Program - nssm.exe. This program is not responding.

nssm.exe is not a valid Win32 application.

nssm.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with nssm.exe?

To help other users, please let us know what you will do with nssm.exe:



Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page


Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.

If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.

Comments

Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

No comments posted yet.

Leave a reply